[Physics] COJETS p-p and pbar-p interaction Monte Carlo library

COJETS is a Monte Carlo library which simulates pbar-p and p-p interactions at
high energy. The interaction process is first calculated at the parton level
by means of perturbative QCD and the Weinberg-Salam model for electroweak
interactions. Partons are then independently fragmented into jets of hadrons,
according to the Field-Feynman model, and the beam jets contribution is
added, according to a longitudinal phase-space model. Multiple QCD radiation
of initial and final partons is included.

Note that in order to compile and link programs against this library, you
must also install the libcojets2-dev package.